Re: [Chrysler300] 375 Troubled Horses / Over Heating 300C

[Keith Boonstra <kboonstra@xxxxxxxxxxxx>]

I'll be checking my coolant level in the radiator when it has cooled in 
the morning to make sure it's down about an inch.  The other thing I 
didn't mention was that besides running out the overflow tube, a lot of 
the coolant squirted out from the cap itself, which, by the way, doesn't 
seem to fit on the neck all that snugly.  I'll bring that cap (marked 14 
lbs.) in and have it tested as well.

Keith Boonstra

-

On 8/17/2011 12:49 AM, John L. Chesnutt wrote:
>
> My300C has never over heated and does not kick out coolant. Several 
> times over the last 53 years I have driven it over several 11,000 foot 
> passes, Beartooth Pass, 10,947 Ft on the NE entrance to Yellowstone 
> Park and Red Mountain Pass, 11,120 Ft near Silverton, Colorado. I use 
> a 14 pound radiator cap the same as George. I have had 10 1/2 
> compression ratio since July 1970. I always drove the 300C fast and 
> hard over mountain passes. It performed well for me. I do not have air 
> conditioning.
>
> John Chesnutt
>
> -----Original Message-----
> From: Chrysler300@xxxxxxxxxxxxxxx 
> <mailto:Chrysler300%40yahoogroups.com> 
> [mailto:Chrysler300@xxxxxxxxxxxxxxx 
> <mailto:Chrysler300%40yahoogroups.com>] On Behalf Of George McKovich
> Sent: Tuesday, August 16, 2011 8:02 PM
> To: Henry Schleimer
> Cc: Rich Barber; Bill Huff; christopher beilby; kboonstra300; 
> <lorencnelson@xxxxxxxxxxx <mailto:lorencnelson%40comcast.net>>; 
> <chrysler300@xxxxxxxxxxxxxxx <mailto:chrysler300%40yahoogroups.com>>
> Subject: Re: [Chrysler300] 375 Troubled Horses
>
> My 300C coupe has never overheated but it will always kick out about 
> 3/4 to one inch of coolant after it has been filled to the top. That 
> usually happens the first or second time it is run for a while at 
> normal operating temps. I do not re-add the different and just drive 
> it without it throwing any more out and without overheating even a 
> 100+ degree days and also at altitudes up to 9,000 feet above sea 
> level. I have always figured that is just one if the quirks with the 
> hemis. I have aftermarket a/c running an RV2 compressor, 6 blade fan, 
> non-thermal clutch and a 14 pound cap.
>
> George
>
> Sent from my iPhone 4
>
> On Aug 16, 2011, at 7:34 PM, "Henry Schleimer" 
> <henry.schleimer@xxxxxxxxxxxxxxx 
> <mailto:henry.schleimer%40optusnet.com.au>> wrote:
>
> > Rich is right in that a full radiator will always expel water, 
> especially
> > when shutting down. Top up if the core is showing but otherwise 
> leave room
> > for the water to expand.
> >
> > Henry Schleimer
> >
> > From: Chrysler300@xxxxxxxxxxxxxxx 
> <mailto:Chrysler300%40yahoogroups.com> 
> [mailto:Chrysler300@xxxxxxxxxxxxxxx 
> <mailto:Chrysler300%40yahoogroups.com>] On
> > Behalf Of Rich Barber
> > Sent: Wednesday, 17 August 2011 10:23 AM
> > To: 'Bill Huff'; 'christopher beilby'; 'kboonstra300';
> > lorencnelson@xxxxxxxxxxx <mailto:lorencnelson%40comcast.net>
> > Cc: chrysler300@xxxxxxxxxxxxxxx <mailto:chrysler300%40yahoogroups.com>
> > Subject: RE: [Chrysler300] 375 Troubled Horses
> >
> > Keep in mind that without a properly-functioning overflow container 
> that is
> > designed to hold the heated and expanded coolant and then return it 
> to the
> > radiator as it cools, the radiator will have to puke out any excess 
> volume
> > from heating and never recover it. So, when cold, the coolant in the
> > radiator tank will appear to be down an inch or more. Topping off at 
> this
> > point will result in more volume overflow next time it gets hot.
> >
> > You can bet there is some boiling going on at the hottest points of the
> > water jackets and heads until the boiling action and natural coolant 
> flow
> > due to temperature variations in the system cools the iron down. The 
> high
> > temperatures also causes some breakdown of the glycol coolant. 
> That's where
> > some of the black crud in the overflow bottle comes from and is one 
> reason
> > to periodically drain, flush and refill the system with fresh 
> coolant-water
> > mix.
> >
> > Rich Barber
> >
> > From: Chrysler300@xxxxxxxxxxxxxxx 
> <mailto:Chrysler300%40yahoogroups.com> 
> <mailto:Chrysler300%40yahoogroups.com>
> > [mailto:Chrysler300@xxxxxxxxxxxxxxx 
> <mailto:Chrysler300%40yahoogroups.com> 
> <mailto:Chrysler300%40yahoogroups.com> ]
> > On
> > Behalf Of Bill Huff
> > Sent: Tuesday, August 16, 2011 4:26 PM
> > To: christopher beilby; kboonstra300; lorencnelson@xxxxxxxxxxx 
> <mailto:lorencnelson%40comcast.net>
> > <mailto:lorencnelson%40comcast.net>
> > Cc: chrysler300@xxxxxxxxxxxxxxx 
> <mailto:chrysler300%40yahoogroups.com> 
> <mailto:chrysler300%40yahoogroups.com>
> > Subject: RE: [Chrysler300] 375 Troubled Horses
> >
> > If the system lost pressure due to a leak or bad cap, it would lose
> > it both after a run down the road as well as after idling. Doesn't
> > sound the solution to me. Also, if it was a leak, it wouldn't come
> > out the overflow tube.
> >
> > Bill Huff
> >
> > >1) Someone else has already suggested what it sounds like - namely
> > >that the system has lost pressure after turning off - and with no
> > >pressure, it boils due to masses of heat coming out of large volume
> > >of hot cast iron etc !!?
> > >
> >
> > [Non-text portions of this message have been removed]
> >
> > [Non-text portions of this message have been removed]
> >
> >
>
> [Non-text portions of this message have been removed]
>
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